Is the Mitzvah to honor one’s parents considered a Mitzvah between man and G-d [i.e. Bein Adam Lamakom] or between man and his fellow [i.e. Bein Adam Lechaveiro]?

Is the Mitzvah to honor one’s parents considered a Mitzvah between man and G-d [i.e. Bein Adam Lamakom] or between man and his fellow [i.e. Bein Adam Lechaveiro]?[1] Some Poskim[2] learn that the mitzvot honor one’s parents is a Mitzvah between man and G-d and not between man and his […]